It seems Archlinux has moved Openbox-Themes to Aur. Have shipped ArchBang with Openbox-Themes for as long as I can remember. Spring release will not have extra themes shipped. Could create a repo and add package to carry on including them, however I resist using packages from Aur. Packaging, updating and getting package added to iso are a lot of work. Not too mention if you pulled iso source files and try to build it your self it makes it much more difficult. So for now I will retire Openbox-Themes. If I think of it I will add a note to Guide.